[6.0] 50dcc8b3b Ensure sphinx is in the PATH

[Dridi Boukelmoune]

commit 50dcc8b3b0d043739c47d2533bde752543581afa
Author: Federico G. Schwindt <fgsch at lodoss.net>
Date:   Thu Apr 26 10:25:09 2018 +0100

    Ensure sphinx is in the PATH

diff --git a/.travis.yml b/.travis.yml
index 2a8408884..2cae8dbee 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -58,6 +58,7 @@ before_install:
   - ./configure ${CONFIGURE_ARGS}
 script:
   - if [[ "$TRAVIS_OS_NAME" == "osx" ]]; then
-      export PYTHONPATH=`brew --prefix`/lib/python2.7/site-packages; fi
+      export PYTHONPATH=`brew --prefix`/lib/python2.7/site-packages;
+      export PATH="/usr/local/opt/sphinx-doc/bin:$PATH"; fi
   - if [[ "$TRAVIS_PULL_REQUEST" != "false" ]]; then make -j3 distcheck; fi
   - if [[ "$TRAVIS_PULL_REQUEST" == "false" ]]; then make -j3 check VERBOSE=1; fi